Hello,
You can Enable Windows Routing and Remote Access to allow dial-up connections or VPN connections, see how to do this below:
1) Click Start, point to Administrative Tools, then click Routing and Remote Access.
2) In the console directory, click Your_Server_Name.
3) In the lower right corner of the server icon next to Your_Server_Name , there is a circle that contains an arrow that indicates whether the Routing and Remote Access service is enabled or disabled:
a) If the circle contains a red arrow pointing down, the Routing and Remote Access service will not turn on.
b) If the circle contains a green arrow that points up, the Routing and Remote Access service will turn on.
4) If the Routing and Remote Access service is turned on and you want to reconfigure the server, you must disable the Routing and Remote Access service. To do this, follow these steps:
a) Right-click Your_Server_Name and click Disable Routing and Remote Access.
b) In the dialog box, click Yes.
5) Right-click Your_Server_Name and click Configure and Enable Routing and Remote Access to start the Routing and Remote Access Server Installation Wizard.
6) Click Next, click Remote Access (Dial Up or VPN) and click Next.
7) Click VPN or Dial-in, depending on the role you want to assign to this server.
8) Under How do you want IP addresses to be assigned to remote clients?, click Automatically or Within a specific range of addresses, then click Next. If you clicked automatically, go to step 9. If you clicked A specific range of addresses, follow these steps:
a) In the Address Range Assignment dialog, click New.
b) In the Start IP address box, type the first address in the range of IP addresses you want to use.
c) In the End IP address box, type the last address in the range of IP addresses you want to use, click OK, then click Next.
9) Click No, use Routing and Remote Access to authenticate connection requests, then click Next.
10) Click Finish to enable Routing and Remote Access service and configure the server as a Remote Access server.
Check the link below for Allow access to all users or individual users and check for workarounds.
Graciously,
Samuel